<template>
    <table v-if="treeData.name">
      <tr>
        <td :colspan="Array.isArray(treeData.children) ? treeData.children.length * 2 : 1" 
          :class="{parentLevel: Array.isArray(treeData.children) && treeData.children.length, extend: Array.isArray(treeData.children) && treeData.children.length && treeData.extend}"
        >
          <div :class="{node: true, hasMate: treeData.mate}">
            <div class="person" 
              :class="Array.isArray(treeData.class) ? treeData.class : []"
             
            >
              <div class="avat">
                <img :src="treeData.image_url" @contextmenu="$emit('click-node', treeData)"/>
              </div>
              <!-- <div class="name">{{treeData.name}}</div> -->
            </div>
             <div class="paeson_name">{{treeData.name}}</div>
            <template v-if="Array.isArray(treeData.mate) && treeData.mate.length">
              <div class="person" v-for="(mate, mateIndex) in treeData.mate" :key="treeData.name+mateIndex"
                :class="Array.isArray(mate.class) ? mate.class : []"
                @click="$emit('click-node', mate)"
              >
                <div class="avat">
                  <img :src="mate.image_url" />
                </div>
                <!-- <div class="name">{{mate.name}}</div> -->
              </div>
              <div class="paeson_name">{{treeData.name}}</div>
            </template>
          </div>
          <div class="extend_handle" v-if="Array.isArray(treeData.children) && treeData.children.length" @click="toggleExtend(treeData)"></div>
        </td>
      </tr>
      <tr v-if="Array.isArray(treeData.children) && treeData.children.length && treeData.extend">
        <td v-for="(children, index) in treeData.children" :key="index" colspan="2" class="childLevel">
          <TreeChart :json="children" @click-node="$emit('click-node', $event)"/>
        </td>
      </tr>
    </table>
</template>

<script>
export default {
  name: "TreeChart",
  props: ["json"],
  data() {
    return {
      treeData: {}
    }
  },
  watch: {
    json: {
      handler: function(Props){
        let extendKey = function(jsonData){
          jsonData.extend = (jsonData.extend===void 0 ? true: !!jsonData.extend);
          if(Array.isArray(jsonData.children)){
            jsonData.children.forEach(c => {
              extendKey(c)
            })
          }
          return jsonData;
        }
        if(Props){
          this.treeData = extendKey(Props);
        }
      },
      immediate: true
    }
  },
  methods: {
    toggleExtend: function(treeData){
      treeData.extend = !treeData.extend;
      this.$forceUpdate();
    }
  }
}
</script>

<style scoped>
table{border-collapse: separate!important;border-spacing: 0!important;}
td{position: relative; vertical-align: top;padding:0 0 50px 0;text-align: center; }
.extend_handle{position: absolute;left:50%;bottom:30px; width:10px;height: 10px;padding:10px;transform: translate3d(-15px,0,0);cursor: pointer;}
.extend_handle:before{content:""; display: block; width:100%;height: 100%;box-sizing: border-box; border:2px solid;border-color:#ccc #ccc transparent transparent;
transform: rotateZ(135deg);transform-origin: 50% 50% 0;transition: transform ease 300ms;}
.extend_handle:hover:before{border-color:#333 #333 transparent transparent;}
/* .extend .extend_handle:before{transform: rotateZ(-45deg);} */
.extend::after{content: "";position: absolute;left:50%;bottom:15px;height:15px;border-left:2px solid #ccc;transform: translate3d(-1px,0,0)}
.childLevel::before{content: "";position: absolute;left:50%;bottom:100%;height:15px;border-left:2px solid #ccc;transform: translate3d(-1px,0,0)}
.childLevel::after{content: "";position: absolute;left:0;right:0;top:-15px;border-top:2px solid #ccc;}
.childLevel:first-child:before, .childLevel:last-child:before{display: none;}
.childLevel:first-child:after{left:50%;height:15px; border:2px solid;border-color:#ccc transparent transparent #ccc;border-radius: 6px 0 0 0;transform: translate3d(1px,0,0)}
.childLevel:last-child:after{right:50%;height:15px; border:2px solid;border-color:#ccc #ccc transparent transparent;border-radius: 0 6px 0 0;transform: translate3d(-1px,0,0)}
.childLevel:first-child.childLevel:last-child::after{left:auto;border-radius: 0;border-color:transparent #ccc transparent transparent;transform: translate3d(1px,0,0)}
.node{position: relative; display: inline-block;box-sizing: border-box; text-align: center;}
.node:hover{color: #2d8cf0;cursor: pointer;}
.node .person{position: relative; display: inline-block;z-index: 2;width:6em; overflow: hidden;}
.node .person .avat{display: block;width:2em;height: 2em;margin:auto;overflow:hidden; background:#fff;border:1px solid #ccc;box-sizing: border-box;}
.node .person .avat:hover{ border: 1px solid #2d8cf0;}
.node .person .avat img{width:100%;height: 100%;}
.node .person .name{height:2em;line-height: 2em;overflow: hidden;width:100%;}
.node.hasMate::after{content: "";position: absolute;left:2em;right:2em;top:2em;border-top:2px solid #ccc;z-index: 1;}
/* .node .paeson_name{transform: rotate(90deg);position: absolute; top: 68px;right: 39px;width: 88px;text-align: center;text-overflow: ellipsis; overflow: hidden; white-space: nowrap;} */


.landscape{transform:translate(-100%,0) rotate(-90deg);transform-origin: 100% 0;}
.landscape .node{text-align: left;height: 8em;width:8em;right: 18px;}
.landscape .person{position: absolute; transform: rotate(90deg);height: 4em;top:4em;left: 2.5em;}
.landscape .person .avat{position: absolute;left: 0;border-radius: 2em;border-width:2px;}
.landscape .person .name{height: 4em; line-height: 4em;}
.landscape .hasMate{position: relative;}
.landscape .hasMate .person{position: absolute; }
.landscape .hasMate .person:first-child{left:auto; right:-4em;}
.landscape .hasMate .person:last-child{left: -4em;margin-left:0;}
</style>
